WO2015080569A4 - An automatic power fault detection method and system for monitoring and controlling a power distribution system - Google Patents
An automatic power fault detection method and system for monitoring and controlling a power distribution system Download PDFInfo
- Publication number
- WO2015080569A4 WO2015080569A4 PCT/MY2014/050011 MY2014050011W WO2015080569A4 WO 2015080569 A4 WO2015080569 A4 WO 2015080569A4 MY 2014050011 W MY2014050011 W MY 2014050011W WO 2015080569 A4 WO2015080569 A4 WO 2015080569A4
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fault
- power
- distribution system
- monitoring
- power distribution
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/06—Details with automatic reconnection
- H02H3/07—Details with automatic reconnection and with permanent disconnection after a predetermined number of reconnection cycles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/16—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to fault current to earth, frame or mass
Abstract
The present invention relates to a method for monitoring and controlling a power system, characterised by the steps of: identifying a fault exceeding a predetermined threshold current in the power distribution system; verifying the identified fault to confirm the fault; generating a digital signal upon fault confirmation; wherein the digital signal activates protective operations against the fault, comprising the steps of: isolating a power supply to an electrical load; and counting a number of fault occurrence; wherein the power supply to the electrical load is restored if the number of fault occurrence is within a predetermined setting; and the power supply to the electrical load remains isolated if the number of fault occurrence exceeds the predetermined setting. An automatic power fault detection system is also disclosed in the present invention.
Claims
AMENDED CLAIMS
received by the International Bureau on 05 June 2015 (05.06.2015)
1 . An automatic power fault detection method for monitoring and controlling a power distribution system, characterised by the steps of:
identifying a fault exceeding a predetermined threshold current in the power distribution system;
verifying the identified fault to confirm the fault;
generating a first digital signal upon fault confirmation; wherein the first digital signal activates protective operations against the fault, comprising the steps of:
isolating a power supply to an electrical load;
counting a number of fault occurrence and identifying a continuous fault occurrence;
wherein the power supply to the electrical load is restored if the number of fault occurrence is within a predetermined setting and no continuous fault occurrence is identified;
wherein the power supply to the electrical load remains isolated if the number of fault occurrence exceeds the predetermined setting or the continuous fault occurrence is identified;
wherein the fault comprises lightning, earth fault, short circuit, power surges, transient, harmonic, and overcurrent; and
wherein a second digital signal is generated by a fault diagnostic controller (10) to restore or isolate the power supply to the electrical load.
3. An automatic power fault detection method for monitoring and controlling a power distribution system according to claim 1 , wherein the predetermined setting is reset to restore the power supply to the electrical load if the number of fault occurrence exceeds the predetermined setting and no continuous fault occurrence is identified.
19
4. An automatic power fault detection method for monitoring and controlling a power distribution system according to claim 1 , wherein the predetermined threshold current has a minimum value of 2.5 imA.
5. An automatic power fault detection method for monitoring and controlling a power distribution system according to claim 1 , wherein the method further comprises detecting whether the power distribution system is earthed and isolating the power supply to the electrical load in the absence of the earthing.
6. An automatic power fault detection method for monitoring and controlling a power distribution system according to claim 1 , wherein the method further comprises detecting whether the power distribution system is connected to live and neutral and isolating the power supply to the electrical load in the absence of live or neutral or both.
7. An automatic power fault detection system for monitoring and controlling a power distribution system according to the method of claim 1 , characterised by:
a fault detector (1 ) for detecting the fault in the power distribution system;
a fault processor (2), connected to the fault detector (1 ), for confirming the fault;
an actuator means (3), responsive to the confirmed fault, for generating the first digital signal;
an automatic reset controller (14) comprising a counter setting (12), for measuring the number of fault occurrence and a repeat fault down (13), for identifying the continuous fault occurrence;
the fault diagnostic controller (10) in communication with the counter setting (12) and repeat fault down (13) to generate the second digital signal; and
20 an on/off controller (8), responsive to the first or second digital signal, for isolating or restoring the power supply to the electrical load (7).
8. An automatic power fault detection system for monitoring and controlling a power distribution system according to claim 7, wherein the fault detector (1 ) has a minimum detection sensitivity of 2.5 imA.
9. An automatic power fault detection system for monitoring and controlling a power distribution system according to claim 7, wherein the automatic power fault detection system further comprises a live/neutral indicator (4) or an earth indicator (5) or a combination thereof.
10. An automatic power fault detection system for monitoring and controlling a power distribution system according to claim 7, wherein the automatic power fault detection system further comprises a manual testing module (6) or a manual reset controller (1 1 ) or a combination thereof.
1 1 . An automatic power fault detection system for monitoring and controlling a power distribution system according to claim 7, wherein the automatic power fault detection system is incorporated with an automatic testing means (9) for simulating a fault occurrence every 24 hours.
12. An automatic power fault detection system for monitoring and controlling a power distribution system according to claim 7, wherein the automatic power fault detection system is monitored and controlled by a centralised management-control system (CMS) (15).
21
Statement under Article 19(1) (Rule 46.4)
The International Search Report has cited documents that, in the opinion of the Examiner, have disclosed subject matter anticipating that of claims 1-12. Accordingly, the following amendments have been made to narrow the scope of the claims and therefore exclude the subject matter anticipated by the prior art cited in the International Search Report and Written Opinion of the International Searching Authority.
1. Claim 1 has been amended to clarify that the protective operations comprises counting a number of fault occurrence and identifying a continuous fault occurrence. Claim 1 has also been amended to further clarify the conditions of restoration or persistent isolation of power supply. The types of power faults have been clarified in claim 1.
2. Claim 3 has been amended to clarify the conditions for the reset of predetermined setting.
3. The article of "a/an" used for some terms in claim 7 have been changed to "the" as those terms have been mentioned in claim 1.
The amended claims do not go beyond the disclosure in the international application as filed. The amendments do not have any impact on the drawings.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MYPI2013702302 | 2013-11-28 | ||
| MYPI2013702302 | 2013-11-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2015080569A1 WO2015080569A1 (en) | 2015-06-04 |
| WO2015080569A4 true WO2015080569A4 (en) | 2015-08-06 |
Family
ID=53199421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/MY2014/050011 WO2015080569A1 (en) | 2013-11-28 | 2014-11-27 | An automatic power fault detection method and system for monitoring and controlling a power distribution system |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2015080569A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106645498B (en) * | 2017-01-16 | 2022-07-05 | 国网福建省电力有限公司 | Automatic starting device and starting method of transformer oil gas chromatography detector |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03173311A (en) * | 1989-11-29 | 1991-07-26 | Hikari Shoko Kk | Self diagnosis system for ground relay unit |
| JPH07301651A (en) * | 1994-05-03 | 1995-11-14 | I D S:Kk | Electrical wiring trouble monitor |
| JP4564615B2 (en) * | 1999-11-04 | 2010-10-20 | 日本高圧電気株式会社 | Fault location system |
| JP2001283706A (en) * | 2000-03-30 | 2001-10-12 | Tootsuu:Kk | Automatic-recovery-type circuit breaker |
| JP2002027654A (en) * | 2000-07-06 | 2002-01-25 | Otowa Denki Kogyo Kk | Automatic closing and interrupt device for breaker, and breaker operating mechanism |
| JP2008160910A (en) * | 2006-12-21 | 2008-07-10 | Chugoku Electric Power Co Inc:The | Protective relay device |
| JP5322784B2 (en) * | 2009-06-08 | 2013-10-23 | 三菱電機株式会社 | Protection relay device characteristic test system |
-
2014
- 2014-11-27 WO PCT/MY2014/050011 patent/WO2015080569A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015080569A1 (en) | 2015-06-04 |
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